Around 31 million pay as you go journeys were made using a mobile in the past year - with the device now accounting for almost one in ten contactless trips.
The unmanned craft was flying about 20-30 metres away from a Loganair flight from Shetland at about 4,000ft.
Over 30 young people from Gloucestershire attended the annual Apprenticeship Open Day organised by transport company CM Downton.
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